<template>
  <div id="app">
    <h1>作业3</h1>
    <table class="tb">
      <tr>
        <th>编号</th>
        <th>品牌名称</th>
        <th>创立时间</th>
        <th>操作</th>
      </tr>
      <!-- 循环渲染的元素tr -->
      <tr v-for="(item, index) in list" :key="item.id">
        <td>{{ item.id }}</td>
        <td>{{ item.name }}</td>
        <td>{{ item.time }}</td>
        <td>
          <button @click="deleteFn(index)">删除</button>
        </td>
      </tr>
      <tr>
        <td colspan="4" v-show="this.list.length === 0 ? !isShow : isShow">
          没有数据咯~
        </td>
      </tr>
    </table>
  </div>
</template>

<script>
export default {
  data() {
    return {
      isShow: false,
      list: [
        { id: 1, name: '奔驰', time: '2020-08-01' },
        { id: 2, name: '宝马', time: '2020-08-02' },
        { id: 3, name: '奥迪', time: '2020-08-03' },
      ],
    }
  },
  methods: {
    deleteFn(id) {
      // console.log(id)
      this.list.splice(id, 1)
    },
  },
}
</script>

<style>
#app {
  width: 600px;
  margin: 10px auto;
}
h1 {
  text-align: center;
}

.tb {
  border-collapse: collapse;
  width: 100%;
}

.tb th {
  background-color: #0094ff;
  color: white;
}

.tb td,
.tb th {
  padding: 5px;
  border: 1px solid black;
  text-align: center;
}

.add {
  padding: 5px;
  border: 1px solid black;
  margin-bottom: 10px;
}
</style>
